Vacuum feed system



G. C. NELSON VACUUM FEED SYSTEM Nov. 6, 192 8.

Filed May 13. 1921 n 0 w f E j w ai f|l\ e@ i l w E Omi/In.; d/ 6 a f f, 6 i w W 0 m F. f E R fm w w 1 50 The cut-off may be made in onepiece o Patented Nov. 6, 1928.

l .UNITED j vSTA GUs'rAvE c. NE

TES yPATENT OFFICE..

LsoN, OFIIOLINE, ILLINOIS, iissIeNoR ro THE Bonera Incx COMPANY,

OE mOLINn, ILLINOIS, A CORPORATION on ILLINOIS. y

VACUUM FEED SYSTEM.

'Application led May 13,

This invention relates to liquid fuel sys- -tems forexplosive engines and itis particularly useful `as an accessory to an `automobile or truckengine 5 y The primary objectfof the invention is to providemeans of simple and substantial con struction, and comprising comparatively few parts, for connection with the fuel supply tank and the intake `manifold of the Aengine l whereby a Vconstant and regular gravity fuel feed to the engine will always be maintained.

Another object of the invention is to provide an improved and sensitively operating means for quickly and alternately opening l and closing the vacuum producing connection and the air vent of a liquid fuel receiving chamber so that a constant and ample supply of fuel will always be maintained for the. engine.

In the accompanying drawing I have illustrated, partly in section, a selected embodiment of the invention and referring thereto 1 is the receiving tank having a chamber l 2, and 3 is a feed tank having a chamber 4,

these tanks being connected by a pipe 5 which is provided with a valve chamber 6, a valve 7 and a screen 8. The feed chamber is much larger than the receiving chamber and the construction is such that the two tanks may be located in any desirable positions and the feed tank may be made in any desired size,

. shape and form. The receivingr tank is provided with a head 9 which is secured in place on the tank by `a rod `1() which projects through the bottom ofthe tank and is threaded to receive a nut 11. An arm 12A on the inner side of the head 9 is provided with a Vnozzle end 13 and a passage 14 extending through the arm leads toa connection 15 which is connected byv` pipe (not shown) with the intake manifoldof the engine. A simi-` lar arm 16 on the` head 9 has a nozzle end 17 and a passage 18 extending through the arm leads to a vent pipe 19. A sleeve 20 has a loose working fit upon the guide rod '10 and carries a float 21. and a cut-od for the nozzle 13 Vand the nozzle 17 this cut-od comprising Vthe disk 22 and the disk 23 connected by collar 24 which is rigidly mounted on the sleeve 20. A r of several pieces, rigidly secured together. The nozzle 13 and the nozzle 17 are oppositely directed, in the form shown, the nozzle 13' f being directed downwardly to be engaged by the disk 22 and the nozzle 17 being directed voif disk revolves with the-float upon theguide Vadapted` to operate the d 1921.r serial No. 469,366. i l

upwardly to be engaged by` lthe'disk 23 and these nozzles and disks are so located with relationto each other and so constructed that a very little movement ofthe float is suflicient to seat the `disk Q2 on the nozzle 13` or the disk 23 on the nozzle-1'1"whcrebythe cutoif alternately opens and closesthe` vacuum connection and the airvent. The double cutrod 10 in the actual use. of the apparatus, 65 thereby keeping itself clean, and this movement is increased by arranging the discharge end 25 of the liquidy fuel supply inlet 26 so that itwill discharge upon the top of the float.

My invention provides a substantial but simple and compact structure which will op crate sensitively and efficiently under all usual conditions of road travel when the apparatus `is installed in an automobile or in a. truck to supply a constant and sufficient fuel feed to the engine at all times.l

My improved double disk cut-oil' and the parts immediately associated therewith may be embodiedin a vacuum feed system coni structed differently fromthat shown in the accompanying drawing and it will be understood, therefore, that I do not limit myself to this particular embodiment but I `reserve the right to make all such changes, adaptations and installations as fairly fall Withi the scope of the following claims. i

I claim:

1. In a vacuum feed system, a tank having i a receiving chamber, a vacuum connection to said receiving chamber terminating in a vertically directed nozzle, an air vent for the receiving chamber terminating in a vertically directed nozzle, apair of cut-od disks disposed to control said nozzles, and a revolubly mounted float rigidly secured to the disks and isksto open and close nd the air vent alterthe vacuum connection a nately. i Y

2. In a vacuum feed system, a tank having m0 a receiving chamber, a vacuum connection to said receiving chamber, an air vent for the receiving chamber, said vacuum connection and air vent having oppositely disposed nozzles, a pair of operatively connected disks disposed on opposite sides ofsaid nozzles, and a slidably journaled float rigidly secured` to one of said disks for operating said disks to alternately open and close the vacuum connection andthe air vent.

3. In a-Wacnuni'feed system, a'tank having a receiving'ehainher, the `vacuum predncing connection to said receiving chamber `having a downwardly direetedvnozzle, an air vent for the receiving chamher-having-an upwardly directed nozzle, pair of connected revolrilile cut-oft' disks disposed on opposite sides o-said nozzles, and a float rigidly secured to one of said cut-oit' disks for operating saidfcubolil disks to alternately seat against said nozzles `for opening'andaclosing-the -vacuuni connecrtion andthe airvent.

4. In a vaeuuin ffeed system, a tank having a'leceivingfchaniher,a valve 4in saidv chamber comprising two 4parallel disks spaced apart, a :fuel supply inlet discharging Ainto said chamber, avacuuni producing connection and an air inlet fterminating Vin nozzles 'in -said ehamber arrangedhetween said disks, and a :float eontrollingsaid disks Efor closing said nozzles.

5. kIn a vacuum Vfeed system, a tank having arreeeiving chamber, afloat in saidtchamber, a pairofdisks carried by saidffloat andspaced .apart,.an air vent for said chamber terminating -in -a nozzle .lying betweeirsaid `disksand adapted .to .beclosedbycne of them, and a vacuum producing connection to said receiv' :ingehamher and terminatingr in a nozzle between said disks and adapted to he closed hy 1thectherfonertlleredf.

6. In a vacuum feed system, a tank having afreeeiving chamber,-affloat in said chamber, yalpair of' disks carried by saidloat and spaced 'apar-na eollaneonneeting said disks, an 4air ent for said chanlbeiftermiiniting infaniozzle ilyingbetween saiddisks and'adapted rte he 'eirfsed 4hyfone offtheln, a vacuum `.prodncin; eonneetion to `said receiving elianlher and terminating in a nozzle between `said disks and adapted to `befelosed diy the other one thered'l. and a fnelssupply .inlet `terminatingr Ainadischarge withilrsaid chamber. 

